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Pat. 11509129 United States, Int. Cl.22 H02H 9/00, H02M 1/36, H02M 5/458, H02M 7/06, H02P 1/02, H02P 6/20, H02P 29/024, H03K 5/1536, H03K 17/567. Electric working machine and method for smoothing AC power supplied thereto : Appl. N 16/849417 : Filed 15.04.2020 : Pub. 22.11.2022 : / Yuki Kawai, Itsuku Kato ; Assignee Makita Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11509129/en?oq=US11509129.html (дата обращения: ДД.ММ.ГГГГ).